About Clozure CL

Clozure CL is a free Common Lisp implementation that runs on the following platforms:

Mac OS X 10.4 and later (ppc32, ppc64, x86, x86-64)

Linux (ppc32, ppc64, x86, x86-64)

FreeBSD 6.x and later (x86, x86-64)

Solaris (x86, x86-64)

Microsoft Windows XP and later (x86, x86-64)

Some distinguishing features of the implementation include
fast compilation speed, native OS threads, a precise, generational, compacting garbage collector,
and a convenient foreign-function interface.

Clozure CL used to be called OpenMCL. It is also sometimes called CCL. You will see the three names being used interchangeably.

Bug Reports

Paid Support

Clozure Associates provides commercial support and consulting services for Clozure CL as well as other Common Lisp implementations. These services can range from helping you debug your software to adding extensions to CCL, to providing several full time Lisp programmers to help you build your application. Please contact us at business@… for more information.